Improvement in wash-boilers



Vn. LAWYER. f

4 Wash-BiIqrs. Y No. 144,774, Patented Nov .l8,l873` v WITJvEsSEs INVENIOR C. 78.12 wye' @0% (5MM By M K 1,25 Attorneys.

attachments used for this purpose.

UNITED STATES PATENT OFFICE.

RALPH LAWYER, OF PITTSBURG, PENNSYLVANIA.

IMPROVEMENT IN WASH-BOILERS.

Specification forming part of Letters Patent No. 144,774, dated November 18, 1873; application filed July 30, 1873.

State of Pennsylvania, have invented a new and useful Attachment for Wash-Boilers and I do hereby declare the following to be a full,

clear, and exact description of the same, reference being had to the accompanying drawings forming part of this speciiication, in which- Figure l is a perspective view, and Fig. 2 a sectional view, of my invention.

This invention relates to that class of Washboilers in which steam and hot water ascend from thebottom ofthe boiler to the top, through asuitable tube, and are discharged upon the fabrics contained in the boiler 5 and has for its object to improve the construction of boiler To this end it consists in the peculiar construction which I will now proceed to describe.

Similar letters of reference in the accompanying drawings indicate the same part-s.

In the drawings, A represents the attachment, consisting of the circular vessel a, having a concave top, from the center of which rises the tube b. The periphery of the vessel or attachment a is provided with perforations c c near the lower edge. The perforations c connect with an annular space, cl, formed by a curved flange, e, extending inward from the bottom of the attachment a, and a vertical flange, f, rising from the ilange e nearly to the top, as shown in Fig. 2.

The object of the vertical flange is twofold: First, it prevents a back action or circulation of the water in the opposite direction from that indicated by the arrows in Fig. 2, through the perforations c c in the vessel a; and, secondly, it renders the circulation of the water more circuitous in'that portion of the attachment when the heat is greatest at its bottom, which causes the water to rise to a higher temperature than it would were the iiangef dispensed with. The flange e, from which the Bange f springs, is curved inwardly to allow a space for the circulation of the Water between the flange e and the outer periphery of the vessel a, lettered d in Fig. 2.

At the bottom of thevessel a is a horizontal rim, g, of sufficient Width, when resting on the bottom of the boiler, to render the joint between the boiler and attachment practically water-tight when pressed down and firmly secured in place by the cross-bar h, extending across the top of the vessel a, and engaging with lugs on the side of the boiler. h represents a cross-bar of wood or other suitable material, sufficiently wide to allow the tube b to pass through it, and long enough to extend across the boiler and engage at its ends with lugs or shoulders on the sides of the boiler, and hold the attachment closely to the bottom.

rl`he tube b is composed of two parts, one adapted to slide in the other, thus'rcndering the tube adjustable.

The attachment A is -placed on the bottom of a boiler, and secured by the cross-bar h.

The bottom of the vessel being water -tight by means of the rim g, and being moreover held in place by the crossbar, the heated water in the vessel a is compelled to rise through the tube b, from which it passes to the top of the boiler. Meanwhile, the cooler water from the boiler enters through the perforations c, filling the space d, preventing the escape of hot water through the perforations passing over the llange f, and taking the place of thel escaping heated water. A continuous flow is thus maintained, which speedily and effectually cleanses the clothes in the boiler.

The horizontal rim renders the vessel a suficiently tight at the bottom to prevent the escape of hot water, which is heated by direct contact with the bottom of the boiler.

Having thus described my invent-ion, what I claim is 1. C lhe vessel a, provided with perforations c, the upwardly-curved flange e, vertical flange j', and tube b, substantially as shown and described. y

2. The vessel a, provided with. the flange g on its lower edge, in combination with the cross-bar h, engaging with lugs on the sides of the boiler, substantially as described, and for the purpose set forth.

RALPH LAWYER.

Witnesses:

J. DONALDSON, RALPH LAWYER, Jr. 

